The show from the Harbour Bridge and Opera House in Australia's largest city is traditionally the world's first major event to ring in the New Year.

Despite safety concerns, organisers are expecting a one million plus crowd before the chimes of midnight move across Asia, the Middle East, Africa, Europe and finally the Americas.

"It just keeps getting better every year," said Sydney Lord Mayor Clover Moore, "with 2,400 more fireworks on the bridge than ever before and a host of exciting new effects lined up".

The 2016 theme is 'City of Colour' and seven tonnes of fireworks will go up in smoke, including 11,000 shells, 25,000 shooting comets and 100,000 individual 'pyrotechnics effects'.

Hong Kong, Beijing, Singapore and other Asian cities may rival Sydney's pyrotechnic splash, but Brunei offers a sober evening after banning Christmas in a shift to hardline Islamic law.

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